基于小世界拓扑模型的大型电网脆弱性评估算法

Small-world Topological Model Based Vulnerability Assessment Algorithm for Large-scale Power Grid

应用小世界网络理论研究电网中大规模连锁故障传播的内在机理,对寻找电网本身固有的脆弱性并提出有针对性的增强措施具有重要意义。文中提出了基于小世界拓扑模型的大型电网脆弱性评估的综合算法,并对电网的拓扑建模、基本特征参数的统计以及故障模拟与脆弱性评估等各部分的独立算法进行了设计,从而形成了具有良好扩展性、便于对大型电网自身结构脆弱性及大规模连锁故障机理进行深入研究的综合算法。将该算法应用在多个实际电网中,取得了较好效果,从而证实了该算法的有效性。

The small-world network theory, which studies the intrinsic spreading mechanism of the large-scale chain-like fault in a power grid, attaches great significance to the inherent vulnerability of the power grid itself and its pertinent enhancement measures. On this basis, an integrated algorithm for vulnerability assessment based on the small-world topological model is proposed. And the independent algorithm for each part, including the topological modeling of the bulk power grid, the statistics of basic characteristic parameters as well as fault simulations and the vulnerability assessment and so on, is then designed separately, thus forms an integrated algorithm with good expansibility and the ability to provide convenience to a through study of the structure vulnerability of a bulk power grid itself and large-scale chain-like fault mechanism. The proposed algorithm has been verified with good results by several actual power grids.